Firefighters arrivedthere around 2:45 a.m. on Thursday. It was so cold, the pumps froze as crews tried to hose down the trailer.

Everyone who was staying inside got out alive. Three of them were taken to the hospital to be treated for smoke inhalation, but an Oxford County emergency dispatcher says their injuries did not appear serious.

Investigators from the state fire marshal's office are expected to visit the home to attempt to determine how the fire started.